fix(client): open all certs in same tab (#43061)

client/src/components/profile/components/Certifications.tsx

@@ -53,7 +53,6 @@ function renderCertShow(username: string, cert: ICert): React.ReactNode {
         <Col className='certifications' sm={10} smPush={1}>
           <Link
             className='btn btn-lg btn-primary btn-block'
-            external={true}
             to={`/certification/${username}/${cert.certSlug}`}
           >
             View {cert.title}

client/src/components/profile/components/TimeLine.tsx

@@ -200,8 +200,7 @@ class TimelineInner extends Component<
           {certPath ? (
             <Link
               className='timeline-cert-link'
-              external={true}
-              to={`certification/${username}/${certPath}`}
+              to={`/certification/${username}/${certPath}`}
             >
               {challengeTitle}
               <CertificationIcon />